The contact owns a 2018 Lincoln MKX. The contact stated that while driving at an undisclosed speed, the check engine warning light was intermittently illuminated. The vehicle was taken to a local independent mechanic, where the vehicle was scanned, and a fault code for the catalytic converter was retrieved. The local dealer was contacted and referred the contact to the manufacturer for assistance. Upon further investigation, the contact related the failure to an unknown NHTSA Campaign; however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 75,000.